3765344213 has 4 divisors (see below), whose sum is σ = 3765472620. Its totient is φ = 3765215808.

The previous prime is 3765344201. The next prime is 3765344239. The reversal of 3765344213 is 3124435673.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3124435673 = 487 ⋅6415679.

It can be written as a sum of positive squares in 2 ways, for example, as 529782289 + 3235561924 = 23017^2 + 56882^2 .

It is a cyclic number.

It is not a de Polignac number, because 3765344213 - 2⁴ = 3765344197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3765344273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3773 + ... + 86861.

It is an arithmetic number, because the mean of its divisors is an integer number (941368155).

Almost surely, 2^3765344213 is an apocalyptic number.

It is an amenable number.

3765344213 is a deficient number, since it is larger than the sum of its proper divisors (128407).

3765344213 is an equidigital number, since it uses as much as digits as its factorization.

3765344213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128406.

The product of its digits is 181440, while the sum is 38.

The square root of 3765344213 is about 61362.4006456723. The cubic root of 3765344213 is about 1555.7323932137.

Adding to 3765344213 its reverse (3124435673), we get a palindrome (6889779886).

The spelling of 3765344213 in words is "three billion, seven hundred sixty-five million, three hundred forty-four thousand, two hundred thirteen".